Melt control in-situ synthesis aluminum matrix composite structure regulation and control method and system
An aluminum-based composite material, an in-situ self-generated technology, which is applied in the field of aluminum-based composite materials, and can solve the problems that in-situ self-generated aluminum-based composite materials cannot be obtained, and it is difficult to organize and control the structure.
Active Publication Date: 2022-01-04
SHANGHAI JIAO TONG UNIV +1
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Problems solved by technology
Due to the existence of these factors, it is difficult to achieve effective microstructure and structure control, and it is impossible to obtain in-situ self-generated aluminum matrix composites with practical application value.
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[0045] Such as figure 1 As shown, the pure aluminum or aluminum alloy substrate is melted at 700-760°C, the aluminum melt 2 is placed in the aluminum melting furnace 1, and reaction salts and reaction aids are added for reaction. The immersion tube 5 of the vacuum bag 3 arranged above the aluminum melting furnace 1 is immersed into the aluminum melt 2 . The vacuum chamber 8 of the vacuum bag 3 is evacuated through the pumping port 4, so that the aluminum melt 2 enters the vacuum bag 3 under atmospheric pressure.
[0046]At the same time, carry out argon rotary injection on the aluminum melt: lower the graphite rotor, and the graphite rotating rod 6 of the graphite rotor passes through the sealed bearing 7 arranged on the top of the vacuum bag 3, passes through the vacuum chamber 8, and inserts the nozzle 9 into the aluminum melt 2 Argon gas is blown in through the middle hole of the rotating rod 6 and ejected from the rotating nozzle 9. The formed bubbles are broken up into a...
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The invention discloses a melt control in-situ synthesis aluminum matrix composite structure regulation and control system and method. TiB2 particles can be in-situ synthesis in an aluminum matrix material, and uniform distribution of micro-nano particles in an aluminum matrix is realized through electromagnetic stirring and ultrasonic treatment; melt purification is realized through rotary injection and vacuum degassing; controllable nucleation of a solid precipitated phase in a melt under interference of the micro-nano particles is achieved through modification of composite rare earth elements. and a single roller and an arc section water-cooling guide rail wall are adopted for quenching aluminum melt so as to achieve fine grains and ultra-fine grains, and meanwhile continuous online treatment and production of the process are achieved.
Description
technical field [0001] The invention belongs to the field of aluminum-based composite materials, and relates to the regulation and control of in-situ self-generated aluminum-based composite materials by melt control. Background technique [0002] Lightweight and high strength is the eternal theme of the development of structural materials. As the most widely used lightweight structural material, aluminum alloy has been developed for more than a hundred years and its performance potential has reached its limit. Reinforced aluminum alloy with ceramics is an effective way to achieve its performance leap. For example, the commonly used SiC particle-reinforced aluminum matrix composites in the world can greatly increase the stiffness and hardness of the material, but it brings a series of problems such as deterioration of plasticity and very difficult processing and forming, which seriously hinders its engineering application. The synthesis of micro-nano-scale reinforced particl...
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IPC IPC(8): B22D11/06B22D11/117B22D11/113B22D11/108B22D11/115B22D11/114C22C1/06C22C1/10C22C32/00C22C21/00
CPCB22D11/0611B22D11/117B22D11/113B22D11/108B22D11/115B22D11/114C22C1/06C22C1/1036C22C32/0073C22C21/00C22C1/1052
Inventor 王浩伟李险峰夏存娟陈东邓亚琪
Owner SHANGHAI JIAO TONG UNIV